A fluorophore-labeled human cell. A fluorophore (or fluorochrome, similarly to a chromophore) is a fluorescent chemical compound that can re-emit light upon light excitation. Fluorophores typically contain several combined aromatic groups, or planar or cyclic molecules with several Ï bonds.
IN THIS TOPIC. Pregnancy symptoms are different for everyone, and can vary from month to month and even from pregnancy to pregnancy. Find out what to expect, from the earliest pregnancy symptoms to the wooziness of morning sickness to the aches and pains of your third trimester.
Around half to two-thirds of all pregnant women will experience morning sickness to some degree, particularly in the first trimester. The symptoms include nausea and vomiting. Morning sickness is typically at its worst early in the day, hence its name, but it can strike at any point during the day or night. For most women, morning sickness begins around the fourth week of pregnancy and resolves by the 12th to 14th week.